Im hoping I can change my review as CT is trying to be helpful. I have two 1500i LI carts, two years old. Both quit working at once. I have now called service and bought new switches $40 each cart, new batteries, $400 each, and now waiting for motherboards $199 each. I think I should have thrown them away and bought a better brand. Cart Tek asked me to update my review. I am happy to do so. I now have both carts working. They needed new receivers. We found this out after replacing everything else first. Why both failed at once I don’t know. Why Cart Tek suggested new batteries switches and motherboards before suggesting the receiver I don’t know. They did offer to take back and refund all parts I bought (-25% restocking fee). I declined due to the fact I did not want to pull the new parts and did not keep the old, except the batteries. Note: I did send the old batteries in and they certified them “good” and returned them. They work for about six holes so perhaps I did need new batteries after two years. I revised my rating from poor to acceptable based on the fact everyone I spoke with did their best to help.